Chapter 13, Problem 95A

Interpretation Introduction

Interpretation: Balanced chemical reaction between hydrogen sulfide and cadmium nitrate is to be written.

Concept introduction:

A chemical reaction is balanced if both sides of compounds possess an equal number of atoms and the total charge for each component of the reaction.

Answer to Problem 95A

  ${\text{H}}_{\text{2}}\text{S}\left(\text{l}\right)+\text{Cd}{\left({\text{NO}}_{\text{3}}\right)}_2\left(\text{aq}\right)\to \text{CdS}\left(\text{s}\right)+2{\text{HNO}}_{\text{3}}\left(\text{l}\right)$

Explanation of Solution

The reaction between hydrogen sulfide and cadmium nitrate is as follows:

  ${\text{H}}_{\text{2}}\text{S}\left(\text{l}\right)+\text{Cd}\left({\text{NO}}_{\text{3}}\right)\left(\text{aq}\right)\to \text{CdS}\left(\text{s}\right)+{\text{HNO}}_{\text{3}}\left(\text{l}\right)$

No. of hydrogen atoms and nitrate ion is not balanced. So multiply ${\text{HNO}}_{\text{3}}$ by 2

  ${\text{H}}_{\text{2}}\text{S}\left(\text{l}\right)+\text{Cd}{\left({\text{NO}}_{\text{3}}\right)}_2\left(\text{aq}\right)\to \text{CdS}\left(\text{s}\right)+2{\text{HNO}}_{\text{3}}\left(\text{l}\right)$

Now, the above is a balanced reaction.